:root {
  --primary-color: #007bff;
  --success-color: #28a745;
  --danger-color: #dc3545;
  --warning-color: #ffc107;
  --dark-bg: #1a1d35;
  --card-bg: #252a45;
  --text-light: #e9ecef;
  --muted: #9aa0c2;
  --border-color: rgba(255, 255, 255, 0.1);
  --flash-success: #2ecc71;
  --flash-danger: #e74c3c;
  --flash-warning: #f1c40f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--dark-bg);
  color: var(--text-light);
}

a {
  color: var(--primary-color);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.admin-dashboard {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  background: #14172e;
  border-bottom: 1px solid var(--border-color);
}

.admin-header .brand h1 {
  margin: 0;
  font-size: 1.5rem;
  color: var(--text-light);
}

.admin-nav a {
  margin-left: 20px;
  color: var(--text-light);
  font-weight: 500;
}

.admin-main {
  flex: 1;
  padding: 40px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.stat-card {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 16px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.35);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

.stat-label {
  margin-top: 8px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.8rem;
}

.admin-section {
  margin-bottom: 40px;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
  border-radius: 12px;
  overflow: hidden;
}

.admin-table thead {
  background: rgba(0, 123, 255, 0.2);
}

.admin-table th,
.admin-table td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.admin-table tbody tr:last-child td {
  border-bottom: none;
}

.admin-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.04);
}

.actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.actions form {
  display: inline;
}

.btn-admin {
  padding: 10px 18px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-admin:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.btn-primary {
  background: var(--primary-color);
  color: #fff;
}

.btn-success {
  background: var(--success-color);
  color: #fff;
}

.btn-danger {
  background: var(--danger-color);
  color: #fff;
}

.flash-container {
  margin-bottom: 20px;
}

.flash {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 10px;
  font-weight: 600;
  transition: opacity 0.5s ease;
}

.flash-success {
  background: rgba(46, 204, 113, 0.2);
  color: #2ecc71;
}

.flash-danger {
  background: rgba(231, 76, 60, 0.2);
  color: #e74c3c;
}

.flash-warning {
  background: rgba(241, 196, 15, 0.2);
  color: #f1c40f;
}

.flash.fade-out {
  opacity: 0;
}

.admin-form {
  background: var(--card-bg);
  padding: 24px;
  border-radius: 14px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.25);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.admin-form label {
  display: flex;
  flex-direction: column;
  font-weight: 600;
  color: var(--text-light);
  gap: 6px;
}

.admin-form input,
.admin-form textarea,
.admin-form select {
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  color: var(--text-light);
  padding: 10px 12px;
  border-radius: 8px;
}

.admin-form textarea {
  min-height: 120px;
  resize: vertical;
}

.checkbox-row {
  flex-direction: row;
  align-items: center;
  gap: 10px;
}

.pagination {
  margin-top: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: radial-gradient(circle at top, #2d335b, #14172e);
}

.login-card {
  background: var(--card-bg);
  padding: 40px;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  width: min(420px, 90vw);
}

.login-card h1 {
  margin-top: 0;
  text-align: center;
  margin-bottom: 24px;
}

.login-card form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.remember-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.stat-summary {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  font-weight: 600;
}

.media-thumb {
  width: 70px;
  height: 70px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.table-text-sm {
  max-width: 220px;
  font-size: 0.9rem;
  color: var(--muted);
}

.form-preview {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.media-preview-lg {
  width: min(260px, 100%);
  border-radius: 16px;
  border: 1px solid var(--border-color);
  object-fit: cover;
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}

.media-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.22);
}

.media-card__preview img {
  width: 100%;
  border-radius: 12px;
  display: block;
  object-fit: cover;
}

.media-card__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  font-size: 0.9rem;
  color: var(--muted);
}

.media-card__meta dt {
  font-weight: 600;
  color: var(--text-light);
}

.media-card__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .admin-header {
    flex-direction: column;
    gap: 16px;
  }

  .admin-nav a {
    margin-left: 0;
    margin-right: 12px;
  }

  .admin-main {
    padding: 20px;
  }
}